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              <p>1，web交互基本流程<br>  客户端根据用户输入的地址信息请求服务器，服务器在接受到用户的请求后进行处理，然后将处理的结果响应给客户端，客户端将响应结果展示给用户。
          
      
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              <p>在C和C++中会提供指针以表示元素在内存中的地址，但这会带来安全上较大的风险。在Java中并没有显示的指针，但进行对象访问实际上是使用指针来实现的，即Java中使用对象引用来代替指针。实际应用中，Java基本类库提供java.util.LinkedList类表示链表，以便用户使用，用户能够通过该类简单实现有关指针的操作。因此，Java在实现链表结构时，一个结点本身就是一个对象。节点数据域data可以使用Object类型对象来实现，用于存储任何类型的数据元素，并通过对象引用来指向该元素；而指针域next可通过结点对象引用实现。<br>
          
      
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              <p>线性表顺序存储结构：使用一组地址“连续”的存储单元“依次”存放线性表中各个元素。<br>采用顺序结构存储的线性表通常称为顺序表。<br>
          
      
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              <p>二叉树链式存储的简单实现<br>首先是建立结点：<br>
          
      
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    <article id="post-JAVA之List" class="article article-type-post" itemscope itemprop="blogPost">
  
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              <ul>
<li>时间复杂度的计算<br>根本没必要计算时间频度，即使计算机处理还要忽略常量，低次幂和最高次幂的系数，所以有了如下方法：<br>1.找出算法中的基本语句：<br>算法中执行次数最多的那条语句为基本语句，通常是最内层循环的循环体。<br>2.计算基本语句执行次数的数量级：<br>只需计算基本语句执行次数的数量级，这就意味着只要保证基本语句执行次数的函数中的最高次幂正确即可，可以忽略所有低次幂和最高次幂系数，这样能够简化算法分析，并且注意力集中在最重要的一点上：增长率。
          
      
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    <article id="post-琳" class="article article-type-post" itemscope itemprop="blogPost">
  
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              <p>菜鸟学生爱画画……<br>
          
      
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    <article id="post-JAVA之多态" class="article article-type-post" itemscope itemprop="blogPost">
  
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              <p>在了解多态之前，先来巩固下继承。</p>
<ul>
<li>继承的使用要点：<br>1，父类也称作超类，基类，派生类等。<br>2，Java中只有单继承，没有像C++那样的多继承。多继承会引起混乱，使得继承链过于复杂，系统难于维护。<br>3，Java中没有多继承，接口有多继承。<br>4，子类继承父类，可以得到父类全部的属性和方法（除了父类的构造方法），但不见得可以直接访问（比如父类的私有属性和方法）。<br>5，如果定义一个类时，没有调用extends，则它的父类是：java.lang.Object。
          
      
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    <article id="post-JAVA之构造器" class="article article-type-post" itemscope itemprop="blogPost">
  
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              <p>一，构造方法的定义声明<br>  构造方法的名字必须和所在类的名字一致，没有返回值，但不能声明void，访问权限可以为任意，但是一般情况下用public方法权限，构造方法中的参数可以根据需要自行定义，参数不同的构造方法构成重载.<br>  <figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"> class Rock&#123;</span><br><span class="line"> <span class="function"><span class="title">Rock</span></span>()&#123;&#125;;   //无参构造方法</span><br><span class="line"> Rock(int i)&#123;&#125;;   //有一个参数类型为int构造方法</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></p>
          
      
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              <p>置换密码<br>1.加密原理：不改变明文字符，只将字符在明文的排列顺序改变，又称换位密码。<br>2.栅栏密码：<br>（1）把将要传递的信息中的字母交替排成上下两行。<br>（2）把下面一行放到上面一行后面。</p>
          
      
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<p> 我相信这个世界上，有些人有些事有些爱，在见到的第一次，就注定要羁绊一生，就注定像一颗树一样，生长在心里，生生世世。<br> ——宫崎骏<br><br> 一世浮生一刹那，一程山水一年华。</p>

      
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